[PATCH 0/5] Separate debugfile improvements

[Gary Benson <gbenson at redhat dot com>]

Hi all,

This series makes a number of improvements to the code that locates
separated debuginfo.  This series (patch 4 specifically) goes really
nicely with the remote/container improvements I made this past few
months, and it'd be really nice to get this into 7.10.

- Patch 1 pulls filename building (including buffer allocation) out of
  find_separate_debug_file into a new function, build_debug_file_name.
  This simplifies find_separate_debug_file ready for the other
  patches.  The new code avoids generating paths with repeated
  separators, but operation is otherwise unchanged.

- Patch 2 alters find_separate_debug_file's caller to supply all paths
  without trailing separators, which patch 1 of this series made
  unnecessary.  This allows paths to be compared more simply.

- Patch 3 changes how find_separate_debug_file's CANON_DIR argument is
  handled.  The new code avoids looking in CANON_DIR if it is the same
  as DIR, but operation is otherwise unchanged.

- Patch 4 updates find_separate_debug_file to handle filenames
  prefixed with "target:".  This allows GDB to locate and access
  separated debuginfo from remote targets and from inferiors in
  containers.

- Patch 5 causes GDB to look for debug files in gdb_sysroot in
  addition to the other searched locations.  This allows for easier
  analysis of core files from foreign machines.

Built and regtested on RHEL 6.6 x86_64.

Ok to commit?

Thanks,
Gary

--
http://gbenson.net/